H
Hong-Zhang Geng
Researcher at Tianjin Polytechnic University
Publications - 81
Citations - 2920
Hong-Zhang Geng is an academic researcher from Tianjin Polytechnic University. The author has contributed to research in topics: Carbon nanotube & Transparent conducting film. The author has an hindex of 22, co-authored 72 publications receiving 2452 citations. Previous affiliations of Hong-Zhang Geng include Sungkyunkwan University & Massachusetts Institute of Technology.
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Effect of Acid Treatment on Carbon Nanotube-Based Flexible Transparent Conducting Films
TL;DR: Flexible transparent conducting films with sodium dodecyl sulfate-dispersed singlewalled carbon nanotubes (SWCNTs) were prepared by a spray method and were further immersed in various acids to improve the cross-junction resistance between SWCNT networks and enhanced metallicity of SWC NTs.
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Fermi Level Engineering of Single-Walled Carbon Nanotubes by AuCl3 Doping
Ki Kang Kim,Jung Jun Bae,Hyeon Ki Park,Soo Min Kim,Hong-Zhang Geng,Kyung Ah Park,Hyeon-Jin Shin,Seon-Mi Yoon,Anass Benayad,Jae-Young Choi,Young Hee Lee +10 more
TL;DR: It is proposed that this large work function shift forces the Fermi level of the SWCNTs to be located deep in the valence band, i.e., highly degenerate, creating empty van Hove singularity states, and hence the work functionshift invokes a new asymmetric transition in the absorption spectroscopy from a deeper level to newly generated empty states.
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Doping and de-doping of carbon nanotube transparent conducting films by dispersant and chemical treatment
Hong-Zhang Geng,Ki Kang Kim,Chulho Song,Nguyen Thi Xuyen,Soo Min Kim,Kyung Ah Park,Dae Sik Lee,Kay Hyeok An,Young Sil Lee,Youngkyu Chang,Young Jun Lee,Jae-Young Choi,Anass Benayad,Young Hee Lee +13 more
TL;DR: In this article, single-walled carbon nanotubes (SWCNTs) dispersed with Nafion in a solvent mixture containing de-ionized water and 1-propanol (bisolvent) were sprayed on a poly(ethylene terephthalate) substrate to fabricate flexible transparent conducting films (TCFs).
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Absorption spectroscopy of surfactant-dispersed carbon nanotube film: Modulation of electronic structures
TL;DR: In this paper, the effect of surfactant in dispersing single-walled carbon nanotubes (SWCNTs) to form conducting films was examined using UV-vis-NIR absorption spectroscopy.
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Functionalization of multi-wall carbon nanotubes to reduce the coefficient of the friction and improve the wear resistance of multi-wall carbon nanotube/epoxy composites
TL;DR: In this paper, the authors used Fourier transform infrared spectroscopy to detect the changes produced by functional groups on the surface of the MWCNTs and found that the functional groups had been grafted on the surfaces of the carbon nanotubes.